Reviewed and updated October 9, 2026 by the SearchSystems.net editorial team. The arrest counts are the ones each agency reported to the FBI, as the FBI held them on October 8, 2026. The jail figures are from the Vera Institute of Justice's Incarceration Trends data. Every office link was opened and checked against the office's own site between September 24, 2026 and October 9, 2026.
Fremont County, Wyoming, has about 40,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Fremont County is held at the county jail, run by the Fremont County Sheriff's Office, and the jail's record of each person held is a public record. This guide says where to look for someone in custody, what the jail holds and who books people into it.
This guide covers the search, the jail, who books people, state prison and common questions.
Related guides: Fremont County public records, Fremont County arrest records, Fremont County warrants, Fremont County criminal records, Fremont County court records, Wyoming arrest records and Wyoming inmate search.
Finding Someone in Custody in Fremont County
The county jail, run by the Fremont County Sheriff's Office, holds everyone kept in custody after an arrest in Fremont County, from every agency.
SearchSystems opened and checked the jail page of the Fremont County Sheriff's Office at fremontcountywy.gov/government/locations.php (page title: Sheriff's Office Locations), phone (307) 332-5611, 460 Railroad St., Lander, WY 82520, which answered when SearchSystems opened it on October 9, 2026.
That page is the office's jail information page rather than a roster, so a search for a particular person goes through the office at (307) 332-5611.
The Fremont County Jail by the Numbers
On an average day in 2023 the jail held about 160 people, down from about 170 in 2019. Its rated capacity in 2023 was 188 beds, and it ran at 87 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Fremont County has about 40,000 residents (2024 Census Bureau estimate), so the jail holds about 41 people for every 10,000 residents.
Who Books People Into the Fremont County Jail
The Fremont County Sheriff's Office and the agencies that report for Riverton, Lander and Shoshoni make the arrests that end in a booking in Fremont County.
The largest arrest counts reported to the FBI were Riverton's 1,282 for 2025, Lander's 605 for 2020 and the Fremont County Sheriff's Office's 379 for 2020.
Together, the two agencies in Fremont County with all twelve months of 2025 on file reported 1,283 arrests to the FBI that year. Those kept in custody were booked into the county jail; a person cited and released at the scene was not.
The counts, agency by agency and year by year, are in Fremont County arrest records.
From the Jail to State Prison
The jail holds people awaiting trial and people serving short sentences. A person sentenced to prison in Fremont County serves the sentence in a facility of the Wyoming Department of Corrections, whose inmate locator is at wdoc-loc.wyo.gov.
Frequently Asked Questions
How do I find an inmate in Fremont County?
Ask the Fremont County Sheriff's Office at (307) 332-5611; its jail page SearchSystems verified is at fremontcountywy.gov/government/locations.php.
How many people are in the Fremont County jail?
About 160 on an average day in 2023, the latest year in the Vera Institute's jail data, against a rated capacity of 188 beds.
What is the phone number for the Fremont County jail?
(307) 332-5611, the number on the page of the Fremont County Sheriff's Office SearchSystems verified.
Where do people sentenced to prison in Fremont County go?
To a facility of the Wyoming Department of Corrections; its inmate locator is at wdoc-loc.wyo.gov.
Is this the official Fremont County website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official county, court and state offices described above and does not hold records, charge for them or take requests.